Connecting the National CAD and BIM...

Connecting the National CAD and BIM Standards Additional Class Materials Handbook Speaker: Johnny Fortune – Bullock Tice Associates Co-Speakers: Connor Christian – Kiewit Corporation; John Grady – CRB Engineering Consultants

CM1316-R; CM4097-R

The National BIM Standard-United States® (NBIMS-US™) doesn’t attempt to define graphical standards so the United States National CAD Standard® (NCS) remains the standard for the foreseeable future. The NCS still applies because much of the output from BIM is still printed drawings and CAD exports. Which standard applies to what? Where should those transitioning from a CAD to BIM environment look within these standards for guidance? A BIM module is being developed to interconnect the National CAD Standard and the National BIM Standard to address these questions and more. This roundtable discussion gives attendees the opportunity to provide input that shapes a BIM module within the United States National CAD Standard to interconnect the standards. Attendees also gain knowledge on how to get involved in future development of the standards.

Learning Objectives At the end of this class, you will be able to:

Describe how the various national standards currently interconnect

Provide input for development of new NCS BIM module

Explain how to get involved in the development of national standards

Quickly locate national standards resources for BIM projects

About the Speaker Johnny Fortune is an Associate and serves as the BIM/IT Director at Bullock Tice Associates. He is an

Autodesk-Certified Professional in Revit Architecture 2009 - 2013. Johnny leads mandatory weekly

training sessions, geared to all staff levels including project managers, to ensure Building Information

Modeling capabilities are maintained and further integrated into the firm’s daily production capabilities.

Johnny is currently a member of several National committees; the National CAD Standards Project

Committee, the US National BIM Standard Project Committee, and the USACE/Industry BIM Advisory

Committee. Within the NCS Project Committee he is chairperson of the BIM AdHoc Task Team which is

developing a module to interconnect the National CAD Standard with the National BIM Standard. He

also serves on the NCS Complicance AdHoc Task Team and the NBIMS-US Planning Committee.

[email protected]

mailto:[email protected]

Connecting the National CAD and BIM Standards

Note: this document is not the class handout. A summary brief of the results from

the roundtable sessions will be documented and uploaded to the AU website a couple

of weeks after AU in lieu of a class handout.

The purpose of this document is to provide additional class materials as background and reference information for the roundtable sessions. The headings below correlate to bookmarks in the pdf. A brief description is also included.

buildingSMART allianceTM Organizational Relationships

A relationship chart depicting the various committees involved in the development of the US National Standards.

NBIMS-USTM Narrative Relationship Statement

A simple relationship statement developed for NBIMS-USTM V3

NCS BIM User Survey Results

Results from June 2013 survey of BIM users

NCS V6 Ballot – BIM Implementation Section

Developed by the NCS BIM AdHoc Task Team as a new section for NCS V6. Includes ballot form at the end.

NBIMS-USTM V3 Ballot – NCS reference standard

Ballot to include NCS as a reference standard (ballot form). See Ballot Rationale.

NCS & NBIMS-USTM timelines

Current Revision Timelines

How to Get Involved

Basic information and links on how to get involved in the development of the national standards.


Website Links National Institute of Building Sciences; buildingSMART alliance™

http://www.nibs.org/; http://www.nibs.org/?page=bsa

buildingSMART alliance Member Portal

http://projects.buildingsmartalliance.org

National BIM Standard – United States®

http://www.nationalbimstandard.org/

United States National CAD Standard®

http://www.nationalcadstandard.org

http://www.nibs.org/



http://www.nibs.org/?page=bsa

http://projects.buildingsmartalliance.org/




http://www.nationalcadstandard.org/

http://www.nationalcadstandard.org/


buildingSMART allianceTM Organizational Relationships

Institute BOD

bSa BOD

bSa Sponsor LevelBOD Members

bSa MOU BOD Members

bSa Contributor Level Members Education Institutions, Associations, Government and Corporations

bSa Elected Interest Group BOD Members

bSa StaffbSa BOD Executive

Committee

NIBS Council BOD Members

bSa Supporter Level MembersIndividuals and Students

NCS Project Committee

NCS Business Mgmt Group

NIBS‐AIA‐CSI

NCS Steering CommitteePC Executive Body

NCS Task Teams3 Standing Task TeamsSubject Matter Experts

CLG TTUDSM TTSymbols TT

Ad‐Hoc Task Teams

Limited Scope Task TeamsSubject Matter Experts

BIM TTCompliance TTSurvey/Civil TT

NBIMS Project Committee

NBIMS Planning Committee

NBIMS Executive Committee

NBIMS Sub‐Committees

NBIMS Taskforce

NBIMS WorkgroupsNational Institute of Building Sciences – October, 2013

Organizational Relationships


NBIMS-USTM V3 Narrative Relationship Statement

National BIM Standard – United States™ and United States National CAD Standard® Relationship Statement How are the NBIMS-US™ and the NCS® connected?

DocNotes: This statement being proposed for NBIMS v3

Document as of: 2013-07-09

The move from CAD to BIM is rooted in the economic and functional advantages of maturing from paper-based, redundant and proprietary paradigms to an information-based interoperable modeling paradigm which, in turn, supports the functions, users and products necessary to the lifecycle of a facility. Simply stated, the NCS addresses paper-centric drafting as a means of producing design and construction drawings.

By contrast the primary focus of the NBIMS-US™ is to provide standards to facilitate the creation and exchange of building information modeling (BIM) data across all aspects of the industry, including design, procurement, assembly, and operations. This is accomplished with reference standards; outlining classifications of data and processes, data exchange formats and requirements for many different types of information exchanges; and practice standards; which outline practices and workflows for data modeling and project execution. While it is anticipated that workflows in the delivery and management of building projects will continue to evolve with changes in technology, traditional construction documents remain a primary means by which project delivery information is conveyed. Printed drawings, CAD files exported from BIM, and/or digital documents representing sheets within a construction document set still need to follow a consensus standard to ensure the project’s design, construction, or recorded electronic data is properly conveyed and understood. The NBIMS-US™ does not define standards for these types of electronic data because the NCS® already has an established consensus standard for these deliverable types. As such, there is an ongoing interconnected relationship between the NBIMS-US™ and the NCS®. Both standards are products of the buildingSMART alliance™ with participating members of the industry community. The standards work together to help ensure electronic project information is conveyed in a clear and usable format. While some portions of the NCS® are superseded by BIM methodologies and technologies or are simply not applicable for BIM use, much of the NCS® can be implemented within BIM processes and tools ensuring consistency for communicating intent. In general, items within the NCS® which are based on manual drafting efforts, and that can alternatively be expressed by leveraging the intelligence of a BIM should be avoided.

END Statement Submission


NCS BIM User Survey Results

1 of 25

NCS BIM User Survey

1. What percentage of your Projects involve BIM software?

Response

Percent

Response

Count

0-24% 22.7% 25

25-49% 10.9% 12

50-74% 13.6% 15

75-100% 50.9% 56

Don't know 1.8% 2

answered question 110

skipped question 1

2 of 25

2. How many of your employees utilize BIM Software (exclude external staff/team/contractors/consultants)?

Response

Percent

Response

Count

1-5 32.1% 35

6-10 13.8% 15

11-25 6.4% 7

More than 25 43.1% 47

No in-house staff 4.6% 5


skipped question 2

3 of 25

3. What is your business focus? (Please select all that apply)

Response

Percent

Response

Count

Commercial 59.6% 65

Educational 46.8% 51

Government 63.3% 69

Health care 45.0% 49

Industrial 29.4% 32

Infrastructure 27.5% 30

Manufacturing 11.0% 12

Residential 17.4% 19

Other (please specify)

11.0% 12


skipped question 2

4 of 25

4. What software do you use to produce BIM? (examples provided in parenthesis)

Response

Percent

Response

Count

Autodesk (Revit, AutoCAD

Architecture, AutoCAD MEP,

Navisworks)

92.7% 101

Bentley (AECOsim Building

Designer, Bentley Navigator)23.9% 26

Graphisoft (ArchiCAD) 3.7% 4

Tekla (BIMsight, Structures) 1.8% 2

None – We do CAD production only 1.8% 2


7.3% 8


skipped question 2

5 of 25

5. Identify relevant BIM workflow technology. (Please select all that apply)

Response

Percent

Response

Count

3D Visualization 96.3% 103

4D Scheduling 40.2% 43

5D Estimating 34.6% 37

Design Analysis 78.5% 84

Facilities Management/Operations &

Maintenance35.5% 38

Generating Specifications 31.8% 34

Interdisciplinary AEC coordination 75.7% 81

Life-cycle analysis 17.8% 19

Procurement 23.4% 25


15.0% 16


skipped question 4

6 of 25

6. What BIM standards/guidelines do you use? (Please select all that apply)

Response

Percent

Response

Count

Custom Firm/Company

generated standard or guide62.9% 66

Client-Specific standard 44.8% 47

National CAD Standards (NCS) 61.0% 64

National BIM Standards (NBIMS) 37.1% 39

BIM Protocol Exhibit E202™-2008:

(American Institute of Architects)22.9% 24

GSA BIM Guide Series 15.2% 16

Indiana University BIM Guidelines 1.9% 2

New York City Dept. of Design +

Construction BIM Guidelines5.7% 6

Penn State BIM Execution Planning 24.8% 26

San Diego Community College

District1.9% 2

Tricare (DoD MHS Minimum BIM

Requirements)2.9% 3

US Army Corps of Engineers BIM

Contact Language/M3 (USACE)35.2% 37

USC BIM Guidelines 6.7% 7

7 of 25

VA BIM Guide 12.4% 13

AEC (UK) BIM Protocol 6.7% 7

COBIM 2012 (Common BIM

Requirements buildingSmart

Finland)

0.0% 0

InfoComm BIM Guidelines 1.0% 1

National BIM Library (nbs UK) 0.0% 0

NATSPEC BIM Portal (Australia) 1.0% 1

New Zealand National Guidelines

for Digital Modeling/ National

Guidelines for Digital Modeling

1.0% 1

Singapore BIM Guide 1.0% 1

Statsbygg BIM Manual (Norway) 0.0% 0


7.6% 8


skipped question 6

8 of 25

7. Do you utilize BIM for any of the following Information Exchanges? (Select all that apply)

Response

Percent

Response

Count

BIM Service interface exchange

(BIMSie)6.0% 3

Building Automation Modeling

information exchange (BAMie)16.0% 8

Building Programming information

exchange (BPie)6.0% 3

Construction Operations

Building information exchange

(COBie)

66.0% 33

Electrical System information

exchange (Sparkie)10.0% 5

HVAC information exchange

(HVACie)12.0% 6

Life Cycle information exchange

(LCie)4.0% 2

Quantity Takeoff information

exchange (QTie)12.0% 6

Specifiers' Properties information

exchange (SPie)2.0% 1

Wall information exchange

(WALLie)4.0% 2

9 of 25

Water System information

exchange (WSie) 0.0% 0


24.0% 12


skipped question 61

8. Please identify any specifications or classifications that you incorporate into BIM.

Response

Percent

Response

Count

Company Created/Internal

Specification31.3% 26

Masterformat 63.9% 53

OmniClass 36.1% 30

UniClass 4.8% 4

Uniformat 30.1% 25


6.0% 5


skipped question 28

10 of 25

9. Please identify any specification/classification SOFTWARE that you use to create project-based specifications in BIM.

Response

Percent

Response

Count

Custom software (created by or

specifically for your company)37.3% 22

e-Specs 33.9% 20

specklink E 13.6% 8

Specs-In-Tact 33.9% 20

SpecWave 3.4% 2


11.9% 7


skipped question 52

11 of 25

10. What formats do you typically provide to the Owner? (check all that apply)

Response

Percent

Response

Count

BIM files (native format) 69.3% 70

CAD (Specifically 2D exports -

DWG/DXF/DGN)79.2% 80

PDF or DWF (or other digital

document)91.1% 92

Exported Digital Model

(Navisworks, i-Model, Industry

Foundation Class (IFC))

53.5% 54

Printed Documents 78.2% 79


5.0% 5


skipped question 10

12 of 25

11. What formats do you typically provide to the Contractor? (check all that apply)

Response

Percent

Response

Count

BIM files (native format) 58.6% 58

CAD (Specifically 2D exports -

DWG/DXF/DGN)67.7% 67

PDF or DWF (or other digital

document)89.9% 89

Exported Digital Model

(Navisworks, i-Model, Industry

Foundation Class (IFC))

40.4% 40

Printed Documents 62.6% 62


2.0% 2


skipped question 12

13 of 25

12. Which of the following do you currently standardize for BIM Production?

Response

Percent

Response

Count

Project Browser/Navigator

Organization70.7% 70

View names 60.6% 60

Family names 64.6% 64

Sheet Names 77.8% 77

DWG guidelines 51.5% 51

Interoperability 31.3% 31


10.1% 10


skipped question 12

14 of 25

13. Which of the following is your PRIMARY source for BIM content?

Response

Percent

Response

Count

My firm creates content as

needed63.7% 65

Software Communities (i.e. Forums

or other sources containing user-

generated content)

10.8% 11

Manufacturer provided content 18.6% 19


6.9% 7


skipped question 9

15 of 25

14. Please rate your familiarity with the following NCS categories.

Not Familiar Somewhat Familiar Very FamiliarRating

Average

Rating

Count

AIA CAD Layer Guidelines 5.7% (5) 28.7% (25) 65.5% (57) 2.60 87

UDS 1 Drawing Set Organization 19.5% (17) 21.8% (19) 58.6% (51) 2.39 87

UDS 2 Sheet Organization 17.2% (15) 23.0% (20) 59.8% (52) 2.43 87

UDS 3 Schedules 28.2% (24) 24.7% (21) 47.1% (40) 2.19 85

UDS 4 Drafting Conventions 16.3% (14) 26.7% (23) 57.0% (49) 2.41 86

UDS 5 Terms and Abbreviations 16.3% (14) 31.4% (27) 52.3% (45) 2.36 86

UDS 6 Symbols 16.1% (14) 31.0% (27) 52.9% (46) 2.37 87

UDS 7 Notations 24.4% (21) 32.6% (28) 43.0% (37) 2.19 86

UDS 8 Code Conventions 35.3% (30) 36.5% (31) 28.2% (24) 1.93 85

Plotting Guidelines 22.4% (19) 36.5% (31) 41.2% (35) 2.19 85


skipped question 24

16 of 25

15. How do you use the NCS AIA CAD Layer Guidelines within BIM production?

Response

Percent

Response

Count

To ensure standardized layers are

used prior to inserting,

linking/referencing, or importing

46.8% 37

To ensure objects are mapped to

correct layers for CAD exports

(2D or 3D)

69.6% 55

Directly within the BIM software

(for BIM solutions that are layer

centric)

27.8% 22


16.5% 13


skipped question 32

17 of 25

16. Which of the following parts of the NCS Uniform Drawing System (UDS) do you currently use in BIM? (Please select all

that apply)

Response

Percent

Response

Count

1. Drawing Set Organization 61.2% 52

2. Sheet Organization 62.4% 53

3. Schedules 32.9% 28

4. Drafting conventions (including

Line weights)41.2% 35

5. Terms and Abbreviations 49.4% 42

6. Symbols 47.1% 40

7. Notations 31.8% 27

8. Code Conventions 10.6% 9

None 27.1% 23


skipped question 26

18 of 25

17. How would you rate the ease of implementing these categories in the NCS for BIM production?

Very DifficultSomewhat

DifficultNeutral

Somewhat

EasyVery Easy N/A

Rating

Average

Rating

Count

1. Drawing Set Organization 3.6% (3) 6.0% (5) 21.4% (18) 23.8% (20) 33.3% (28) 11.9% (10) 3.88 84

2. Sheet Organization 4.8% (4) 4.8% (4) 17.9% (15) 23.8% (20) 35.7% (30) 13.1% (11) 3.93 84

3. Schedules 3.6% (3) 10.7% (9) 33.3% (28) 20.2% (17) 19.0% (16) 13.1% (11) 3.47 84

4. Drafting conventions (including

Line weights)9.6% (8) 15.7% (13) 24.1% (20) 24.1% (20) 14.5% (12) 12.0% (10) 3.21 83

5. Terms and Abbreviations 2.4% (2) 6.0% (5) 22.9% (19) 32.5% (27) 21.7% (18) 14.5% (12) 3.76 83

6. Symbols 4.8% (4) 21.4% (18) 22.6% (19) 28.6% (24) 9.5% (8) 13.1% (11) 3.19 84

7. Notations 2.4% (2) 7.2% (6) 28.9% (24) 32.5% (27) 12.0% (10) 16.9% (14) 3.54 83

8. Code Conventions 3.6% (3) 12.0% (10) 41.0% (34) 12.0% (10) 7.2% (6) 24.1% (20) 3.10 83


skipped question 27

19 of 25

18. How do you use the NCS Plotting Guidelines within BIM production?

Response

Percent

Response

Count

To ensure objects are mapped to

correct layer colors for CAD

exports

26.2% 22

Directly within the BIM software

(for BIM solutions that are layer

centric)

17.9% 15

As a guide to configure line weights

and print settings40.5% 34

I don’t use the plotting

guidelines or I just use the

software as-is

42.9% 36


3.6% 3


skipped question 27

20 of 25

19. Rate the importance/applicability of the following NCS categories for BIM production.

Very Low Low Medium High Very High N/ARating

Average

Rating

Count

AIA CAD Layer Guidelines 21.7% (18) 13.3% (11) 12.0% (10) 22.9% (19) 22.9% (19) 7.2% (6) 3.13 83

UDS 1 Drawing Set Organization 8.4% (7) 8.4% (7) 20.5% (17) 26.5% (22) 26.5% (22) 9.6% (8) 3.60 83

UDS 2 Sheet Organization 7.2% (6) 9.6% (8) 16.9% (14) 28.9% (24) 27.7% (23) 9.6% (8) 3.67 83

UDS 3 Schedules 8.4% (7) 13.3% (11) 25.3% (21) 26.5% (22) 18.1% (15) 8.4% (7) 3.36 83

UDS 4 Drafting Conventions 9.9% (8) 12.3% (10) 19.8% (16) 30.9% (25) 18.5% (15) 8.6% (7) 3.39 81

UDS 5 Terms and Abbreviations 7.2% (6) 9.6% (8) 30.1% (25) 24.1% (20) 20.5% (17) 8.4% (7) 3.45 83

UDS 6 Symbols 8.4% (7) 7.2% (6) 21.7% (18) 30.1% (25) 24.1% (20) 8.4% (7) 3.59 83

UDS 7 Notations 8.4% (7) 10.8% (9) 30.1% (25) 24.1% (20) 15.7% (13) 10.8% (9) 3.31 83

UDS 8 Code Conventions 9.8% (8) 13.4% (11) 34.1% (28) 12.2% (10) 12.2% (10) 18.3% (15) 3.04 82

Plotting Guidelines 17.1% (14) 19.5% (16) 28.0% (23) 15.9% (13) 9.8% (8) 9.8% (8) 2.80 82


skipped question 28

21 of 25

20. Please rate the importance of the NCS developing a standard for the following topics to standardize BIM production

(Please select all that apply)

Not Important at all Somewhat Important Important Very ImportantRating

Average

Rating

Count

Project Browser/Navigator

Organization25.3% (21) 30.1% (25) 22.9% (19) 21.7% (18) 2.41 83

View Names 30.1% (25) 24.1% (20) 22.9% (19) 22.9% (19) 2.39 83

External Links/References 19.3% (16) 28.9% (24) 33.7% (28) 18.1% (15) 2.51 83

Family/Category/Item Names 9.8% (8) 25.6% (21) 35.4% (29) 29.3% (24) 2.84 82

Sheet Names 20.5% (17) 24.1% (20) 31.3% (26) 24.1% (20) 2.59 83

Model divisions (i.e. worksets or

linked/reference model files)19.3% (16) 22.9% (19) 41.0% (34) 16.9% (14) 2.55 83

Various export formats 14.5% (12) 25.3% (21) 31.3% (26) 28.9% (24) 2.75 83

Model integrity (addressing

erroneous content, warnings, or

errors)

11.0% (9) 14.6% (12) 36.6% (30) 37.8% (31) 3.01 82

Interoperability with other BIM

software10.8% (9) 15.7% (13) 22.9% (19) 50.6% (42) 3.13 83

Usability of model content by

subsequent project stakeholders or

team members

9.6% (8) 8.4% (7) 33.7% (28) 48.2% (40) 3.20 83


8


22 of 25

skipped question 28

21. If the NCS were to provide project templates in native BIM format, how would you anticipate using that content?

Response

Percent

Response

Count

We would use the NCS templates

exclusively in lieu of our current

templates.

2.4% 2

We would use the NCS templates

as a starting point and then add

our content.

39.3% 33

We would modify our current

templates to include some

information from the NCS

template.

36.9% 31

We probably wouldn't use the NCS

templates.13.1% 11


8.3% 7


skipped question 27

23 of 25

22. Please rank the current categories of the NCS by order of importance for which 2D or 3D native BIM content should be

developed. (1=most important, 10=least important -- Note: Items will reorder based on your selections)

1 2 3 4 5 6 7 8 9 10 N/ARating

Average

Rating

Count

AIA CAD Layer Guidelines24.4%

(20)

11.0%

(9)

2.4%

(2)

4.9%

(4)

0.0%

(0)

4.9%

(4)

8.5%

(7)

4.9%

(4)

12.2%

(10)

15.9%

(13)

11.0%

(9)5.27 82

UDS 1 Drawing Set Organization23.2%

(19)

20.7%

(17)

8.5%

(7)

4.9%

(4)

6.1%

(5)

12.2%

(10)

4.9%

(4)

3.7%

(3)

3.7%

(3)

1.2%

(1)

11.0%

(9)3.62 82

UDS 2 Sheet Organization6.1%

(5)

18.3%

(15)23.2%

(19)

13.4%

(11)

7.3%

(6)

3.7%

(3)

6.1%

(5)

3.7%

(3)

4.9%

(4)

1.2%

(1)

12.2%

(10)4.01 82

UDS 3 Schedules2.4%

(2)

4.9%

(4)

15.9%

(13)

17.1%

(14)22.0%

(18)

11.0%

(9)

7.3%

(6)

2.4%

(2)

2.4%

(2)

3.7%

(3)

11.0%

(9)4.86 82

UDS 4 Drafting Conventions12.2%

(10)

12.2%

(10)19.5%

(16)

13.4%

(11)

13.4%

(11)

6.1%

(5)

6.1%

(5)

4.9%

(4)

0.0%

(0)

0.0%

(0)

12.2%

(10)3.81 82

UDS 5 Terms and Abbreviations3.7%

(3)

9.8%

(8)

3.7%

(3)

6.1%

(5)

11.0%

(9)22.0%

(18)

13.4%

(11)

14.6%

(12)

4.9%

(4)

0.0%

(0)

11.0%

(9)5.62 82

UDS 6 Symbols12.2%

(10)

7.3%

(6)

6.1%

(5)14.6%

(12)

11.0%

(9)

13.4%

(11)14.6%

(12)

6.1%

(5)

3.7%

(3)

0.0%

(0)

11.0%

(9)4.75 82

UDS 7 Notations1.2%

(1)

0.0%

(0)

4.9%

(4)

8.5%

(7)

6.1%

(5)

12.2%

(10)

20.7%

(17)22.0%

(18)

9.8%

(8)

3.7%

(3)

11.0%

(9)6.73 82

UDS 8 Code Conventions3.7%

(3)

2.4%

(2)

2.4%

(2)

1.2%

(1)

4.9%

(4)

2.4%

(2)

4.9%

(4)

18.3%

(15)25.6%

(21)

18.3%

(15)

15.9%

(13)7.77 82

Plotting Guidelines2.4%

(2)

3.7%

(3)

2.4%

(2)

4.9%

(4)

7.3%

(6)

1.2%

(1)

1.2%

(1)

7.3%

(6)

18.3%

(15)37.8%

(31)

13.4%

(11)7.97 82



NCS V6 Ballot BIM Implementation Section

BIM Implementation for NCS_B_2013-07-11-NCS-V6-261M-FortuneJohn

BIM Implementation

Document as of: 2013-07-29

TABLE OF CONTENTS

1.1 INTRODUCTION

1.2 REFERENCES

1.3 CLARIFICATIONS

1.4 BASIC BIM GUIDELINES

1.5 SUMMARY

BIM Implementation

1.1 INTRODUCTION

The buildingSMART alliance™ continues to develop standards to streamline information sharing of digital content for the building industry. Along with the United States National CAD Standard® (NCS), the

National BIM Standard-United States™ (NBIMS-US™) has become a well-established consensus

standard that continues to be further developed by its membership. It has been a general understanding that BIM projects should incorporate the NCS as noted in the references of this section. However, the NCS was primarily developed for CAD workflow and the workflow of BIM is very different; therefore,

difficulties of complying with the NCS arise when implementing BIM. Furthermore, the NBIMS-US™ does

not duplicate the information contained within the NCS so there have been limitations between the standards for practical BIM implementation that maintains consistency in common industry deliverables (i.e. CAD files and printed or digital documents). Many other BIM standards have been developed by

various entities to meet the specialized needs of those entities but, like the NBIMS-US™, they do not

duplicate the NCS; thus, the NCS remains the primary standard for paper-centric drawings.

The intent of this section is to outline the implementation of the NCS for BIM use. The BIM Implementation section identifies relevant topics within the NCS that can be incorporated within BIM workflow by adding clarification as needed without displacing an established CAD workflow. It is important

to remember that the NCS and NBIMS-US™ may not be the only applicable standards for any given BIM

project. As with all NCS content this section is intended to be general in order to be applicable to most BIM projects regardless of software platform used. Further, it avoids being too specific regarding topics that are better defined within an owner’s or organization’s specific BIM standard or items that vary by project and are best documented in a project execution plan. Successful implementation of the NCS for BIM use is dependent on the user having an overall understanding of required versus optional or recommended NCS content. In general, if the optional and/or recommended NCS content is implemented for any given BIM project, then the content should be compliant.


1.2 REFERENCES

Because the NCS is a long-standing, well-established standard it is referenced by many BIM standards addressing printed output and incorporation of CAD data (i.e. importing, authoring, or exporting). Along with other standards in circulation, the NBIMS-US™ has several references to the NCS.

Finally, because it is clear that traditional computer-aided drafting (CAD) will be a part of practice for the foreseeable future, References also introduces and provides a link to the important continuing role of the United States National CAD Standard® (NCS) and the relationship NCS will have to 3D, 4D, and other virtual modeling and construction environments.1

The United States National CAD Standard® (NCS) is the only comprehensive U.S. CAD Standard for the design, construction and facility management industries. The program's goal is broad voluntary adoption of the CAD Standard by the building design, construction and operation sectors, thereby establishing a common language for the building design and documentation process. Use of NCS eliminates the overhead costs that organizations now incur to maintain proprietary office standards, train new staff, and coordinate implementation among design team members. The 2-D standard plays a crucial role in easing the transition to new BIM software systems and the 3-D object-based standards.2

Since all drawing output should at this point be [United States] National CAD Standard® compliant, we are making this a requirement for a minimum BIM. This demonstrates that standards are being considered, when possible.3

Additionally, the NBIMS-US™ website offers an overview of the relationship between the NBIMS-US™ and the NCS via a FAQ:

WHAT IS THE DIFFERENCE BETWEEN THE UNITED STATES NATIONAL CAD STANDARD® (NCS), AND THE NATIONAL BIM STANDARD-UNITED STATES™ (NBIMS-US™)?

The move from CAD to BIM is rooted in the economic and functional advantages of maturing from paper-based, redundant and proprietary paradigms to an information-based interoperable modeling paradigm which, in turn, supports the functions, users and products necessary to the lifecycle of a facility.

Simply stated, the NCS addresses paper-centric drafting as a means of producing design and construction drawings. NBIMS-US sets standards for typical processes and computer-based exchanges of information employed during the conception, creation, and operation of facilities. Since design and construction drawings, as well as computer-based virtual building models, are a typical product of building information modeling techniques, NCS will continue to be important as a standard for design and construction drawing output from the BIM process.

1 (2007, December 18). NBIMS-US™ v1 Sec. 1 Ch. 1.2 2 (2007, December 18). NBIMS-US™ v1 References 3 (2012, May). NBIMS-US™ v2 5 Practice Documents 5.2 Graphical Information


The NCS is a product from the cooperation of the AIA, CSI, and NIBS. The NCS represents a consensus among architects, engineers, and experts from the construction industry about how to classify building design data and streamline communication among owners and design and construction project teams based on paper-centric information delivery.

The NCS defines standards for many aspects of electronic building-design data, including:

CAD layers

Organization of drawing sets

Drawing sheets and schedules

Drafting conventions

Terms and abbreviations

Graphic symbols

Notations

Code conventions

Plotting"²

The NCS is also preparing for an update which will incorporate its relationship to the NBIMS now that the relationships have been identified.4

1.3 CLARIFICATIONS

This section clarifies the applicability of NCS content for BIM production only. It is not intended to change or amend any requirements or recommendations for CAD implementation. The sub-items are organized according to their order within the NCS. The BIM Implementation section is not exhaustive and therefore should be considered a general guide. Care should be taken to ensure that the BIM models are creating

content that is described within the NCS as common practice in manual drafting.

CAD Layer Guidelines

BIM platforms are mainly object-based. Some maintain an underlying CAD layer system while others are based on categories without the use of layers. As such, all levels of the CAD layer guidelines may not be applicable or even possible for all BIM uses. For layer-centric BIM platforms, adherence to the layer guidelines is applicable to all forms of BIM production whether relating to importing CAD data, authoring new layer-based content, or exporting CAD data. For BIM platforms that do not utilize CAD layers natively, ensuring compliance with the CAD Layer Guidelines for CAD data that is imported into the model

4 (2013). NBIMS-US™ Website FAQ #7


and/or exported from the model is applicable. Further clarification is needed to highlight what is actually required versus what is optional as this topic is often misunderstood. The CAD Layer Guidelines classifies Level 1 Discipline Designator and Major Group layer naming as required but Level 2 Discipline Designator, Minor groups, and Status groups as optional (i.e. A-WALL is required whereas A-WALL-FULL-D is optional). Thus, for BIM use, the required Level 1 discipline designator and Major group can and should be employed whereas the optional Level 2 Discipline designator, minor and status groups need not be implemented if technically problematic to achieve. If optional designators and groups are used, they should be compliant with the standard. Additionally, some exceptions may apply to the required designator and major group. For example, some elements or sub-elements within the BIM software may not have an option to map certain elements to the proper corresponding layer when exporting to CAD. Such exceptions are accepted and expected so long as the basic layer convention is followed as set forth in the CAD Layer Guidelines. Other, more stringent project requirements may apply and would dictate that the final, deliverable CAD files be checked and/or modified in native CAD software for compliance.

Drawing Set Organization

The drawing set organization is not problematic for BIM use and should be employed. A notable exception for BIM use within this section is the file naming conventions (UDS 1.4-1.5). This convention is authored in regards to individual CAD files based on type (i.e. FP for floor plan, EL for elevation, etc.) linked within a model set. This convention may be used for some software platforms and on some projects; however, given the complexity of BIM software and how some platforms are built with united or singular models that maintain a hyperlinking system to keep the project references coordinated, the file naming is not required for native BIM content. However, the file naming for exported CAD Sheets still applies. It is expected that BIM projects will utilize a BIM Project Execution Plan (PxP) that will define the file naming conventions for model files as outlined in the NBIMS-US™. This will enable each project to incorporate project specific requirements.

All view types and sheets should adhere to the drawing set organization as outlined in the Drawing Set Organization module. With advancements in BIM technology there is an increasing use of 3D views to convey design/construction intent as opposed to merely a rendering or basic visualization view. In cases where the intent of the 3D view is to convey design or construction information it can be incorporated logically within the set according to the number series that pertain to what is being conveyed. For example, a sheet with sections would be included in the 300 series. A 3D section view of a building that is further showing section content or replacing 2D views can and should also be included in the 300 series as well. Views that are intended to be more of a traditional rendering of for visualization purposes only (not documentation purposes) should remain at the end of the set in the 900 series.


Sheet Organization

The sheet organization module can be implemented as-is for BIM use. No exceptions or clarifications are necessary. Lists of sheets in a drawing index should be derived from the model when possible.

Schedules

The basic format of the sample schedules in this module should be followed for BIM use. While some cases may warrant a manually created schedule to properly convey information, in general schedules should contain data extracted or populated directly from the model. BIM enables scheduling beyond traditional means and as such many schedules may not become part of a construction document set or record model but are used as a non-graphical way of quickly viewing or modifying model content. These, often referred to as working schedules, are not standardized within the scope of the NCS. This module makes several provisions and options for schedule creation; however, at a minimum all schedules used for documentation purposes are to include a Heading and Mark, Item Description, and Distinguishing Feature columns as shown in UDS Figure 3.1-1.

Drafting Conventions

Basic standards for identifying North, Title Marks, Grid Layout, Dimensioning practices, standard scales, line widths (for drafting elements), common linetypes, sheet cross-referencing, sheet types (0-general, 1-plan) should all be followed. A notable exception for BIM use is to avoid manual or partial hatching when the element can display the proper material as it is assigned to the component within the BIM. For example, avoid additional line work to convey masonry walls but use the material display for the building element instead. When legibility becomes problematic due to drawing scale or material pattern type, the traditional partial or manual hatching may be used. Line weights as defined in the Drafting Convention


module apply to drafting elements within the BIM (i.e. line work used for details or embellished components not generated from the model).

Terms and Abbreviations

Abbreviations should be avoided but when used are to comply with the Terms and Abbreviations module.

Symbols

All symbols categorized as drafting or annotation symbols (i.e. datum points, elevation, section and callout symbols; tags and graphic scales) are all applicable. Model elements (i.e Fixtures, Furniture, and Equipment) need not be symbolized if they could vary from actual component type used. When practical, it is acceptable to use manufacturers’ or custom content that more accurately depicts dimensions and other defining characteristics rather than generic symbols. If traditional 2D linework is used in lieu of model components the symbols module should be followed. The accepted Level of Development (LOD) along with the BIM PxP for any given project should define detail of model elements.

Notations

The Notations module is optional but is not problematic for BIM use. If utilized users should adhere to the standard as outlined in the Notations module. If reference keynotes are used they should be generated from intelligent building information. When practical, use information in the model rather than manual notations.

Code Conventions

The Code Conventions module is optional but is not problematic for BIM use. If utilized it should adhere to the standard as outlined in the Code Conventions module. Utilization of information in BIM to validate Code Compliance is recommended (i.e. occupancy, area calculations, travel distances, etc).

Plotting Guidelines

The plotting guidelines contain some information that may not be applicable to BIM use. However, if mapping colors for CAD exports most of the information applies. At a minimum for all BIM use, all drafting elements within BIM (not necessarily Model elements) should adhere to the line width plotting table as defined in the Plotting Guidelines 2.0

1.4 BASIC BIM GUIDELINES

This section extends the applicability of NCS content for BIM production by defining new standards

specific for BIM use. As these guidelines are not exhaustive the NBIMS-US™ should be referenced for additional BIM standards and all BIM projects should utilize a Project Execution Plan (PxP) to address project and/or team specific needs. While BIM platforms vary in terminology and methodology, certain

common factors exist and warrant these basic BIM guidelines:

Authoring Content

1. Begin authoring of model and/or model components with appropriate template or seed file and maintain correct categorization of all components.

2. Use the correct object creation toolsets provided within the software. Avoid manually drafting elements when there is a tool available to create the element (exception being some drafting or


detail elements or views when it is necessary to display the element at a more granular level than the model displays correctly or the accepted LOD for the project).

3. Object/component/element characteristics, material definitions, and other basic qualities should be assigned directly to the objects.

4. Model content to be associated/hosted to appropriate geometry plane or model component (Wall, Ceiling, Floor, level, etc.) and must not have excessive offsets. In the example provided below, both display correctly in terms of graphics but the use of the offset has incorrect metadata for the component. “Appearing correct” on prints or within the model is insufficient criteria to verify model accuracy. The content should accurately reflect the design and construction intent of both graphical AND non-graphical information.

5. Automatic population of callout, view, and title referencing should be used in lieu of manual text

entry overrides. 6. Tabular information should be derived directly from the model wherever possible (schedules,

drawing indexes, keynoting, etc). 7. Views (floor plans, elevations, sections, details, etc.) should derive from the model. 8. Dimensions should not be overridden. Once a project progresses past schematic/conceptual

phase, use real-world dimensions for components, not nominal dimensions. 9. Constrain, pin, or lock items that should not change to prevent accidental modification (i.e.

existing conditions that have been field verified).

Model Coordination and Delivery

1. All model files within a project should share the same coordinate system. 2. All model files within a project should share coordinated units and unit tolerance. 3. All model files within a project should share the same basic level names and vertical reference

datum. 4. Model(s) should be purged, cleaned, and audited prior to distribution to other team members or

project stakeholders. 5. Model(s) should be free of any unused or unnecessary views, links, references, or temporary

content. All links or references should maintain portability and reusability (i.e. use relative paths and avoid embedding or binding content).


6. Model(s) should be free of any erroneous and/or duplicate geometry that cause errors in quantities (i.e. two identical chairs placed in the exact same location in the model may appear fine but will be an error in quantities). This also applies to content in aggregate where quantities should not be duplicated when derived from a collection of models that represent the building.

7. Model(s) should be free of excessive warnings or errors identified by the BIM software. Exceptions should be documented and distributed with model(s).

8. One composite model per building should be provided. Separate model files (i.e. discipline specific or separated by level, etc.) are insufficient when BIM is a deliverable. A holistic composite model is necessary even if the composite model is only used as a container for links and/or references (i.e. a means of packaging all related files for delivery).

9. Contract (Construction) Documents should be derived from the model(s). Avoid drafting 2D lines for modeled data but rather use 2D linework to embellish the model when necessary to convey intent. Sections and Details and other enlarged and more detailed views should utilize model content to the greatest extent possible.

1.5 SUMMARY

The NCS BIM implementation section is an overview of how NCS content can be used within BIM production. Future revisions will expand on this implementation and become more specific as other limitations are identified and as technology continue to evolve. Most NCS content applies and can be implemented with few, minor exceptions. Utilizing the NCS for BIM production will maintain a paramount purpose of the standard -- consistent and streamlined communication among owners and design/construction teams.

Multiple Components: United States National CAD Standard® Version 6.0 - Ballot Item Submission Form

Ballot Item Identification Number (provided by NIBS staff): .............. [2013-07-11-NCS-V6-261M-

FortuneJohn]

© National Institute of Building Sciences 2013 – All rights reserved Page 1 of 6

Instructions: Fill in the Submission date in Part 1 and the Author(s) information in Part 2.

PART 1 - SUBMISSION DATE (must be completed by author(s))

Ballot Item Submission Date: July 11, 2013 Date of Resubmission Number 1 (if applicable): Date of Resubmission Number 2 (if applicable):

PART 2 - AUTHOR INFORMATION (must be completed by author(s))

Name: Johnny Fortune

Company: Bullock Tice Associates Email address: [email protected]

Daytime phone: 850-384-4138 Sponsoring organization (if applicable): NCS BIM AdHoc Task Team

Co-Author Information (If needed)

Co-Author Number 2

Name: Frank Heitzman

Company: Heitzman Architects Email Address: [email protected]

Sponsoring Organization (if applicable):

Co-Author Number 3

Name: Jason Sturnolio

Company: RRMM Architects Email Address: [email protected]


Co-Author Number 4

Name: Justin Jameson

Company: U.S. Army Corps of Engineers Email Address: [email protected]


Co-Author Number 5

Name: Dr. Walter Black

Company: VidCAD LLC Email Address: [email protected]



FortuneJohn]



Co-Author Number 6

Name: Chuck Graham

Company: O'Neal Inc. Email Address: [email protected]


Co-Author Number 7

Name: Dominique Fernandez

Company: National Institute of Building Sciences Email Address: [email protected]


Co-Author Number 8

Name: Van Woods

Company: U.S. Army Corps of Engineers Email Address: [email protected]


Co-Author Number 9

Name: Ron Croke

Company: HDR Inc. Email Address: [email protected]


Co-Author Number 10

Name: Various Committee Members

Company: USACE/Industry BIM Advisory Committee Email Address: N/A




FortuneJohn]


Part 3 – Multiple Components: Copy this page and add as many pages as required to explain the symbols being balloted upon. See Main Symbols instruction document for more information.

Title Addition of BIM Implementation Section

Description

Proposed BIM Section developed by the NCS BIM AdHoc Task Team to clarify use of NCS for BIM implementation. Section identifies logical exclusions and variations without disrupting the current state of the NCS or CAD-based workflow. Section also includes very Basic BIM Guidelines

Change Classification

Proposed module/section includes both Fundamental concepts and Prescribed data

Supporting Commentary

NBIMS-US as well as many other BIM standards reference the NCS for typical graphic standards, construction document development, CAD data, etc. However some items within the NCS do not apply for BIM use. Thus, this section attempts to provide clarification of NCS for BIM use only and provide a framework for new BIM content in future releases. See attached NCS_BIM_Module.docx

List of Pages Location/Page(s) that will be affected by the revision: N/A – Section proposes new content that is BIM-based only; leaving existing NCS content unaltered.

Effect on NCS Content

New content

*******Turn Track Changes On*******

Effect on other NCS Content

Clarifies and expands NCS content for BIM implementation. Suggest adding a section outside of UDS (after AIA/CAD layer guidelines or appended after Plotting Guidelines). Alternatively, Section could be included as module 9 within UDS.

*******Turn Track Changes Off*******

Graphic File Name/Type

attached



FortuneJohn]


Conditional Approval

No



FortuneJohn]


Part 4 – Task Team Review: (Area below for Task Team Review Only) Instructions to Task Team: Read and follow instructions in designated boxes. Keep dates in mind when planing workload and responses.

Original Ballot Item Submission (Task team must provide a response to the author(s) within 28 calendar days of receipt)

1 Date ballot item Submission received by the task team: 7/12/2013

2 Task team's response to the ballot item (one of the following four responses must be provided to the author of the ballot item). At least 2/3 of the task team members must cast votes to meet quorum requirements. A response requires a simple majority of votes from the quorum.

2A “Approved” ballot items only: Include date the ballot item was moved to the NCS Project Committee group and the author notified of the task team's response.

<Date>

2B

"Approved as Noted" ballot items ONLY: If the ballot was amended as described in the General Instructions, please explain those revisions." Include date the ballot item was moved to the NCS Project Committee group and the author notified of the task team's response.

Editorial Items modified 7/31/2013

2C

“Revise/resubmit” ballots items ONLY: If the Task Team marks the ballot as described in the General Instructions give explanation here and date when returned to author otherwise leave blank.

<Task Team explanation or Not Applicable> <Date>



FortuneJohn]


2D

“Rejected” ballots items ONLY: If the Task Team marks the ballot as described in the General Instructions give explanation here and date when returned to author otherwise leave blank.


3

Revisions made in Response to NCS PC Comments: If the ballot was amended by mutual agreement by the author and task team in response to NCS PC comments during the Ballot Review Period, explain the changes. Otherwise, choose "Not applicable:"


Note to Task Team: If the ballot is resubmitted then copy above schedule below and retitle to ReSubmission 1.


NBIMS-USTM V3 Ballot NCS reference standard

National BIM Standard – United States™ Version 3 Reference Standard Submission Template

[NCS V5]

[2013-08-14-NBIMS-US V3 Balloting-V3-019R-FortuneJohn]

Ballot Item Submission Form – Part 1

WARNING - This document is not a National BIM Standard – United States™. It is distributed for review and comment. It is subject to change

without notice and may not be referred to as an NBIMS-US™. © National Institute of Building Sciences 2013 – All rights reserved

i

Copyright Notice

This document is copyright-protected by the National Institute of Building Sciences (the Institute). While the reproduction of working drafts or committee drafts in any form for use by participants in the NBIMS-US™ standards development process is permitted without prior permission from the Institute, neither this document nor any extract from it may be reproduced, stored or transmitted in any form for any other purpose without prior written permission from the Institute.

Submittal Date -

Date: 2013-08-14 Resubmittal: 2013-11-09

Primary Author -

Name: Fortune, John, David (on behalf of NBIMS-US Planning Committee and NCS BIM Ad-Hoc Task Team) Company Name: Bullock Tice Associates Email: [email protected] Phone Number: 850-434-5444 Cell Phone Number: 850-384-4138

Co-author(s) -

Name, company, email, phone

New or Existing Content -

New Content Amend/Delete Existing Content

Submission -

Submission Type: Reference Standard Industry Interest Area: AE, Builder, Manufacturer, Owner, Operator, Consultant, Software Developer, other. Domain: Design, Procure, Assemble, Operate

Committee Assignment: NBIMS-US™ [TS] Submission Status: Submitted – 2013-08-14 Review Status: Approved – Date Assigned – 2013-08-16 Approved as noted - Date Revise/Resubmit - Date Rejected - Date Editorial – Date

http://projects.buildingsmartalliance.org/files/?artifact_id=6747


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Intellectual Property Rights

NATIONAL INSTITUTE OF BUILDING SCIENCES AGREEMENT REGARDING

NATIONAL BIM STANDARD-UNITED STATES™ INTELLECTUAL PROPERTY RIGHTS

THIS AGREEMENT is made this 14th day of August, 2013, between NATIONAL INSTITUTE OF BUILDING SCIENCES ("Institute"), a District of Columbia not-for-profit corporation, Suite 700, 1090 Vermont Avenue, N.W., Washington, D.C. 20005, and John Fortune (“Volunteer”), whose address is 909 E. Cervantes St., Pensacola, Fl. 32501.

IN CONSIDERATION of the mutual promises and covenants herein, the parties agree as follows:

Copyrights

The parties acknowledge that Institute has developed and is developing and commissioning work for the National BIM Standard – United States™ (NBIMS-US™) (“the Work”), which Work is a collective work including the contributions of multiple organizations and individuals. In submitting material for possible inclusion in the NBIMS-US™, Volunteer agrees to contribute his/her/its copyrightable work product to the NBIMS-US™ and grants Institute a nonexclusive, irrevocable, worldwide, royalty-free copyright license to reproduce, publish, distribute, display publicly, and create derivative works from, Volunteer’s contributed work as part of the NBIMS-US™ or any ballot for inclusion of the work in the NBIMS-US™. Institute agrees to include Volunteer’s work in the NBIMS-US™ , if the work is adopted pursuant to the Institute’s established procedures and, in Institute’s sole discretion, the content of such work is determined to meet the standards of acceptable quality established for the Work.

It is understood and agreed that full and exclusive right, title, and ownership of all copyright interests in the collective Work shall vest in Institute immediately upon the creation thereof, and Institute shall have the exclusive right to claim and assert any and all copyrights in the collective work. Volunteer shall have no copyright interest in the NBIMS-US™ as a whole.

Volunteer shall be entitled to retain whatever copyright interest he, she, or it may have in the work he/she/it created and contributed to the NBIMS-US™. Institute agrees to acknowledge publicly and credit the contribution made by Volunteer in any publication of the NBIMS-US™.

To the extent that Volunteer includes in his/her/its contribution to the NBIMS-US™ any material which he/she/it did not create or to which he/she/it does not own the copyright, Volunteer agrees to obtain the requisite permissions, in writing, for inclusion of such material in the Work.

If Volunteer is the United States Government or an agency of the Government and the Government does not hold copyright in the submitted work, Volunteer 1) represents that the submitted work is in the public domain, or 2) grants the Institute all rights necessary for the Institute to reproduce, distribute, display, and create derivative works from, the submitted work as part of the NBIMS-US, and represents that such permission is consistent with the rights held by the Government. Institute reserves the right to seek clarification from the Government as to the extent of the rights granted to the Institute by the Government under this clause.



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The Volunteer signed below represents and warrants that he/she/it has not knowingly incorporated any third party materials into any Contribution unless Volunteer knows that he/she/it has sufficient rights and licenses from such third party necessary to submit such Contribution.

Volunteer represents and warrants that if he/she is employed with a third party and owes a duty to such third party regarding intellectual property that such third party has agreed to license any such intellectual property according to the terms and conditions of this agreement. Any Contribution made by such Volunteer in accordance with this policy will also be deemed a Contribution made by such third party.

Upon a final determination under the NBIMS-US™ procedural rules that a submitted ballot item will not become part of the NBIMS-US™, the copyright license to use the submitted work granted in this agreement shall be deemed terminated at that time.

Confidentiality

Volunteers should not submit any material that they deem confidential. No submitted work or contributions of any material will be considered confidential, regardless of any markings to the contrary.

Trademarks

Institute shall have the exclusive right to use the designations National BIM Standard – United States and NBIMS-US™ as trade or service marks to identify the Work.

Patents

Institute shall not be responsible for identifying patents or essential patent claims that might be used in complying with a proposed or adopted NBIMS-US™ standard or for conducting inquiries into the legal validity or scope of those patents or patent claims brought to Institute’s attention.

If the submitter of a proposed standard, any Volunteer, any patent holder or other person has personal knowledge that a proposed, balloted, or adopted NBIMS-US™ standard may require practice of an essential patent claim in order to comply with or implement the standard, Institute shall be notified of that fact. When Institute receives such a notice, it shall proceed as follows:

As soon as practicable, Institute shall request and receive from the patent holder or person authorized to make assurances on behalf of the patent holder an assurance in writing that

a) Such party does not hold and does not currently intend holding (i.e. has not filed or is not currently preparing a patent application) any essential patent or patent claim(s); or

b) A license to such essential patent or patent claim(s) will be made available to applicants desiring to use the license for the purpose of implementing the standard either:

i) Under reasonable terms and conditions that are demonstrably free of any unfair discrimination; or ii) Without compensation and under reasonable terms and conditions that are demonstrably free of any unfair discrimination.



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iv

All submitters of contributions and all other Volunteers who have worked on the NBIMS-US™ standard, who have not disclosed any patents, but who become aware of potentially essential patents after the NBIMS-US™ standard is finalized, agree to license such patents according to at least b) i) above. When Institute receives an assurance from or on behalf of a patent holder as described above, the NBIMS-US™ standard shall be annotated as follows:

NOTICE TO USER: Compliance with this standard may require use of an invention covered by patent rights. (Information can be found at [URL].

Institute takes no position by publishing this standard with respect to the validity of any such patent claim(s) or of any patent rights in connection therewith. If a patent holder has filed a statement of willingness to grant a license under these rights on reasonable and non-discriminatory terms and conditions to applicants desiring to obtain such a license, then details may be obtained from the National Institute of Building Sciences.

If Institute is unable to obtain an assurance described in a) or b) above, Institute shall pursue one or more of the following courses of action: i) cease on-going consideration of a proposed standard that would require use of the essential patent or patent claim; ii) withdraw from the NBIMS-US™ an approved standard that would require use of the essential patent or patent claim; iii) re-work the technology around the patent or patent claims at issue; iv) adopt a new or existing alternative technology as the NBIMS-US™ standard, using established procedures; or v) with appropriate review and counsel, determine that the patent or patent claims at issue are not essential to compliance with the existing proposed or adopted standard.

National Institute of Building Sciences Henry L. Green, Hon AIA President Acknowledgement statements:

By checking this box and submitting this Ballot Item Submission Form, I hereby agree to all terms and conditions of the National Institute of Building Sciences Agreement regarding Intellectual Property Rights appearing in the above section.

Intellectual Property Rights owned by one other than the submitter. This Ballot Item Submission Form submits by reference only a document the Intellectual Property Rights to which are owned by the following person or entity: The National Institute of Building Sciences, 1090 Vermont Avenue NW, Suite 700, Washington, DC 20005 (202) 289-7800, (202) 289-1092 Fax, www.nibs.org

Note

Incomplete submissions will be returned to authors.



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1

Type of document – Reference Standard

United States National CAD Standard® V5

Contents

Type of document – Reference Standard ...................................................................................................................... 1

Title – Subtitle, Edition Date or Version ........................................................................................................................ 1

Ballot Rationale ............................................................................................................................................................. 2

Keywords ....................................................................................................................................................................... 2

1 Scope – Business Case Description ........................................................................................................................ 2

1.1 Publishing Organization ............................................................................................................................... 2

1.2 Version ......................................................................................................................................................... 2

1.3 Date Publication ........................................................................................................................................... 3

1.4 Industry Source and Process .................................................................................................................... 3

1.5 Revision Plans and Notification .................................................................................................................... 3

2 Normative references. ........................................................................................................................................... 3

3 Terms and definitions ............................................................................................................................................ 4

4 Symbols and abbreviated terms ............................................................................................................................ 4

5 Web Location ......................................................................................................................................................... 4

6 License terms ......................................................................................................................................................... 4

7 Referenced by Exchanges or other NBIMS-US™ Content ...................................................................................... 4

Annex A .......................................................................................................................................................................... 5

Annex B ........................................................................................................................... Error! Bookmark not defined.

Bibliography .................................................................................................................... Error! Bookmark not defined.



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Ballot Rationale

The United States National CAD Standard® (NCS) has a long standing history of being the foremost authority regarding CAD standards for the building industry. As it is also a product of the National Institute of Building Sciences’ buildingSMART alliance™ Council, developed and revised by consensus of the NCS Project Committee, and considered by many to be a companion standard to the NBIMS-US™ for BIM implementation and use. It is fitting that it should be formally included within NBIMS-US™ v3 as a reference standard. For both version 1 and 2 of NBIMS-US, the NCS is referenced although it is not currently listed as a de facto reference standard. There are ongoing efforts to further define the relationship between the NCS and NBIMS-US™ including a BIM implementation section submitted as a ballot for NCS V6 and a relationship statement planned for inclusion in the narrative of NBIMS-US V3. Including the NCS as a reference standard supports ongoing efforts of the NCS Steering and Project Committees, the NCS BIM Ad-Hoc Task Team and the NBIMS-US Planning Committee, and provides a greater link between the standards. Furthermore, through research, user interviews, and surveys, we have determined that there is a continuing need for BIM users, adopters, and benefactors to reference and utilize the NCS as the building industry is still heavily dependent on paper-centric and CAD format delivery methods.

The intent of this ballot is not to force BIM users into a CAD workflow but to maintain standardization when the BIM is used to produce or convey project drawing documentation such as graphical output, export to CAD, sheet set organization, and standard annotation symbols.

Keywords

National CAD Standard

1 Scope – Business Case Description

The NCS is an existing industry consensus standard that is developed and managed under the oversight of the National Institute of building Sciences buildingSMART alliance™. It has been accepted and utilized by numerous public, private organizations and educational institutions to standardize CAD and paper-centric information delivery for over a decade. A brief list of adopters at the time of this ballot is provided in Annex A: NCS_Adopters.pdf and the current list is available on the NCS website:

http://www.nationalcadstandard.org/ncs5/adopters.php.

1.1 Publishing Organization

The National Institute of Building Sciences

1.2 Version

United States National CAD Standard® Version 5


http://www.nationalcadstandard.org/ncs5/adopters.php


[NCS V5]





3

1.3 Date Publication

May 2011

1.4 Industry Source and Process

Like the NBIMS-US™ , the NCS is a consensus standard developed and refined by industry leading organizations such as USACE, AIA, and CSI as well as a myriad of other companies and individuals. It is intended to be used to ensure consistent electronic building data for all phases of a project’s lifecycle. It is an indispensable reference for NBIMS-US™. The primary intent of the NCS is to coordinate efforts of the building design and construction industry by standardizing drawing information to streamline communication among owners and design and construction project teams. Use of the Standard is also intended to reduce cost for offices to develop custom standards. A more extensive list of benefits and intent are provided in Annex A: NCS_Benefits.pdf and via the NCS website: http://www.nationalcadstandard.org/ncs5/about.php Like the NBIMS-US™, the NCS has a well-established means of updating the standard. The revision process is provided in part II of Annex A: NCS_Rules_of_Governance.pdf and is also available via the NCS website: http://www.nationalcadstandard.org/ncs5/pdfs/ncs_rules_of_governance.pdf The NCS is an industry consensus standard, industry representatives have ample opportunity to become and stay involved with further development of the standard. Information on getting involved is provided in Annex A: NCS_Get_Involved.pdf and via the NCS website: http://www.nationalcadstandard.org/ncs5/getinvolved.php

1.5 Revision Plans and Notification

Revisions are accomplished in accordance with the NCS Rules of Governance and typically the NCS is on a 2.5-3 year revision cycle. As a product of the buildingSMART alliance™ (bSa), revisions to the NCS are initiated by the Alliance. The bSa Executive Committee has oversight of revision cycles for both standards and can coordinate revision efforts and schedules. The NCS revision process is outlined within Appendix F – NCS Rules of Governance of the Standard. It is also provided in part II of Annex A: NCS_Rules_of_Governance.pdf and is also available via the NCS website: http://www.nationalcadstandard.org/ncs5/pdfs/ncs_rules_of_governance.pdf

2 Normative references.

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

None


http://www.nationalcadstandard.org/ncs5/about.php

http://www.nationalcadstandard.org/ncs5/pdfs/ncs_rules_of_governance.pdf

http://www.nationalcadstandard.org/ncs5/getinvolved.php

http://www.nationalcadstandard.org/ncs5/pdfs/ncs_rules_of_governance.pdf


[NCS V5]





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3 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

3.1 United States National CAD Standard® NCS The United States National CAD Standard® (NCS) streamlines and simplifies the exchange of building design and construction data from project development throughout the life of a facility. It coordinates the efforts of the entire industry by classifying electronic building design data consistently allowing streamlined communication among owners and design and construction project teams.

4 Symbols and abbreviated terms

For purposed of this document the following symbols and abbreviated terms apply.

None

5 Web Location

The following link is to version 5 of the NCS. Although the NCS is on a 2.5 to 3 year revision cycle, subsequent versions will be clearly designated as such. Version 5 will not be edited and will remain accessible to users. http://www.nationalcadstandard.org/ncs5/

6 License terms

The standard is available to the public at a fee per version. License fee options are provided in Annex A: NCS_License_Fees.pdf and documented on the NCS website: http://www.nationalcadstandard.org/ncs5/ordering.php. The license terms as defined within the License Agreement of the NCS are provided in Annex A: NCS_Licensing.pdf and documented on the NCS website: http://www.nationalcadstandard.org/ncs5/ncs/licensing.php.

7 Referenced by Exchanges or other NBIMS-US™ Content

Although there are many BIM guides, guidelines, and standards that reference the NCS in addition to the NBIMS-US™, the references below are limited to NBIMS-US™ content. The references and apparent link between the standards is substantial and thus the ballot does not warrant an exhaustive search and reference to other documents.

NBIMS-US™ 2 Reference Standards o 2.9.5 Bibliography


http://www.nationalcadstandard.org/ncs5/

http://www.nationalcadstandard.org/ncs5/ordering.php

http://www.nationalcadstandard.org/ncs5/ncs/licensing.php


[NCS V5]





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NBIMS-US™ 5 Practice Documents o 5.2 MINIMUM BIM – DECEMBER 07, REVISED MAY 2012, 5.2.2 Normative references o 5.2 MINIMUM BIM – DECEMBER 07, REVISED MAY 2012, 5.2.3 Terms, definitions, symbols, units

and abbreviated terms, Graphical Input 5.2.3.3

Annex A o NBIMS-US PROJECT COMMITTEE RULES OF GOVERNANCE January 2011, Purpose 1.1

Annex B o 7.1 NATIONAL BIM STANDARD-UNITED STATES™ VERSION 1 – PART 1 OVERVIEW, PRINCIPLES,

AND METHODOLOGIES – DECEMBER 2007, Other Key Reference

Annex A

NCS_Adopters.pdf: A documented list of NCS adopters.

NCS_Benefits.pdf: Outlines many of the benefits of using the NCS

NCS_Get_Involved.pdf: Provides information on how to become involved in the revision and development process of the NCS.

NCS_License_Fees.pdf : Documents Licensing options.

NCS_Licensing.pdf: Documents the terms of the licensing agreement for NCSv5.

NCS_Rules_of_Governance.pdf: The official rules of governance that documents how the standard is revised (Part II).



NCS & NBIMS-USTM Timelines

United States National CAD Standard® (NCS) V6 Timeline

The National BIM Standard-United States® (NBIMS-US™) V3 Timeline


How to Get Involved

MEMBER PORTAL LOGIN

The National Institute of Building Sciences buildingSMART alliance™ is calling all building professionals to participate in the development process of the United States National CAD Standard® and looking to every sector of the industry to submit ballots. Ballots can amend or revise current NCS content or they can address the latest technologies, processes and practices not yet included in the standard.

The Alliance welcomes the participation of all sectors of the building industry. To get involved in the NCS Development Process, individuals and organizations need to take the following steps:

1. Join the National CAD Standard Project Committee. If you own a copy of the current version of the NCS (Version 5), fill out the National CAD Standard Project Committee Application Form and submit. A staff member will review your application and send you a welcome letter.

2. Log on to the Member Portal. In your letter, you will have instructions to access the bSa Member Portal. There you can download a ballot and supporting materials to start the process.

You may also be interested in joining the National Institute of Building Sciences. As a member of the Institute, you will become eligible to participate in a number of Institute councils, including the buildingSMART alliance™. When joining, select your preferred membership or sponsorship level and create an account. Once registered, you will receive a welcome letter via email (within the next business day) with instructions to select the councils on which you would like to participate.

For more information on the NBIMS-US Project Committee or to submit a ballot item, contact either Dominique Fernandez or Deke Smith.

National Institute of Building Sciences | An Authoritative Source of Innovative Solutions for the Built Environment1090 Vermont Avenue, NW, Suite 700 | Washington, DC 20005-4950 | (202) 289-7800 | Fax (202) 289-1092

© 2011 National Institute of Building Sciences. All rights reserved.

Get Involved in the National CAD Standard Project Committee

MEMBER PORTAL LOGIN

RELATED DOCUMENTS

NBIMS-US Charter (NBIMS-US

Charter is currently being updated.

For the latest NBIMS-US governance

document please consult the May

2012 NBIMS-US Rules of

Governance below.)

NBIMS Rules of Governanace(PDF)

The National Institute of Building Sciences buildingSMART alliance™ is calling all buildingprofessionals to participate in the development process of National BIM Standard – UnitedStates™ Version 3 (NBIMS-US™ V3) and looking to every sector of the industry to submitballots. Ballots can amend or revise current NBIMS-US™ content or they can address thelatest technologies, processes and practices not yet included in the standard.

The Alliance welcomes the participation of all sectors of the building industry. To getinvolved in the NBIMS-US™ V3 Development Process, individuals and organizations needto take the following steps:

a. Join the National Institute of Building Sciences. As a member of the National Institute of Building Sciences, you willbecome eligible to participate in a number of Institute councils, including the buildingSMART alliance™. When joining,select your preferred membership or sponsorship level and create an account. Once registered, you will receive awelcome letter via email (within the next business day) with instructions to select the councils on which you would like toparticipate.

b. Join the buildingSMART alliance™ and the NBMIS-US™ Project Committee. If you are already a member of the NationalInstitute of Building Sciences, but not yet a buildingSMART alliance member or an NBIMS-US™ Project Committeemember, fill out the National BIM Standard-United States™ Version 3 Project Committee Application Form and submit.(Only members of the NBIMS-US™ Project Committee can submit ballots and vote on changes to the standard.) A staffmember will review your application and send you a welcome letter.

c. Log on to the Member Portal. In your letter, you will have instructions to access the bSa Member Portal. There you candownload a ballot and supporting materials to start the process.

For more information on the NBIMS-US Project Committee or to submit a ballot item, contact either Dominique Fernandez orDeke Smith.

National Institute of Building Sciences | An Authoritative Source of Innovative Solutions for the Built Environment1090 Vermont Avenue, NW, Suite 700 | Washington, DC 20005-4950 | (202) 289-7800 | Fax (202) 289-1092

© 2013 National Institute of Building Sciences. All rights reserved.

Get Involved in the National BIM Standard-UnitedStates™ Project Committee

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